The photovoltaic effect and charge carrier mobility in layered compositions of bithiophene or related rotaxane copolymer with C70 fullerene derivative
| Autor: | V. V. Malov, A. Farcas, Alexey R. Tameev, Sergei Kostromin, Sergei Bronnikov |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Rotaxane Fullerene Physics and Astronomy (miscellaneous) 02 engineering and technology Photovoltaic effect 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Polymer solar cell 0104 chemical sciences chemistry.chemical_compound Photoactive layer chemistry Chemical engineering Copolymer Thiophene Charge carrier 0210 nano-technology |
| Zdroj: | Technical Physics Letters. 43:173-176 |
| ISSN: | 1090-6533 1063-7850 |
| DOI: | 10.1134/s1063785017020079 |
| Popis: | Organic photovoltaic cells with a bulk heterojunction have been manufactured in which the photoactive layer consists of a mixture of bithiophene copolymer or related rotaxane with a fullerene derivative (PC70BM). The mobility of charge carriers in photoactive layers has been determined, the current–voltage characteristics of photovoltaic cells have been measured, and the energy level diagram of cell components has been constructed. It is established that the polyrotaxane component (macrocycle) insulates a part of thiophene fragments of the macromolecule, thus hindering the transport of carriers and leading to large energy losses for exciton dissociation, which results in a decreasing photovoltaic effect. |
| Databáze: | OpenAIRE |
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